import router, {resetRouter} from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {getToken, setToken} from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/auth-redirect'] // no redirect whitelist

//路由前置守卫
router.beforeEach(async(to, from, next) => {
  const fromFlag = from.path
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)


  const localToken = localStorage.getItem('token')
  if(localToken) {
    setToken(localToken)
  }
  const hasToken = getToken()

  if (hasToken) {
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      // next({ path: '/login' })
      next()
      NProgress.done() // hack: https://github.com/PanJiaChen/vue-element-admin/pull/2939
    }else{
      // determine whether the user has obtained his permission roles through getInfo
      const hasRoles = store.getters.roles && store.getters.roles.length > 0
      let permission = null
      if(hasRoles) {
        next()
      }else {
        const permissionString = localStorage.getItem('permission')
        if (!permissionString) {
           next(`/login?redirect=${to.path}`)
        }
        permission = JSON.parse(permissionString)
        const accessRoutes = await store.dispatch('permission/generateRoutes', permission)
        const role = localStorage.getItem("role")
        router.addRoutes(accessRoutes)
        await store.dispatch('user/setRoles', permission)
        if (fromFlag === '/login') {
          if (permission.includes('Order') || (role && role === '1')) {
            return next({name: 'Order'})
          }
        }
        if (role && role === '1') {
          if (to.path === "/") {
            return next({name: 'Order'})
          }
          console.log(to)
          return next(to.path)
        }
        const filterRoute = accessRoutes.filter(e => to.fullPath.indexOf(e.path) !== -1);

        if (filterRoute.length) {
          const first = filterRoute[0]
          const redirect =  first.path + (first.children.length && !first.children[0].hidden ? first.children[0].path : '')
          return next({path: redirect})
        }
        const first = permission[0]
        // const redirect = first.path + first.children ? first.children[0].path : ''
        return next({name: first})
      }

      // const hasRoles = store.getters.roles && store.getters.roles.length > 0
      // if (hasRoles) {
      //   next()
      // } else {
      //   try {
      //     // get user info
      //     // note: roles must be a object array! such as: ['admin'] or ,['developer','editor']
      //     // const { roles } = await store.dispatch('user/getInfo')
      //     // generate accessible routes map based on roles
      //     // const accessRoutes = await store.dispatch('permission/generateRoutes', roles)
      //     // dynamically add accessible routes
      //     // router.addRoutes(accessRoutes)
      //
      //     // hack method to ensure that addRoutes is complete
      //     // set the replace: true, so the navigation will not leave a history record
      //     next({ ...to, replace: true })
      //   } catch (error) {
      //     // remove token and go to login page to re-login
      //     await store.dispatch('user/resetToken')
      //     Message.error(error || 'Has Error')
      //     next(`/login?redirect=${to.path}`)
      //     NProgress.done()
      //   }
      // }
      NProgress.done()
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})


